MARS 12825 Run Capacitor

The MARS 12825 Run Capacitor is a professional-grade 50/7.5 MFD 370V dual run capacitor designed for high-demand HVACR applications. Engineered as a direct replacement for OEM HVAC capacitors, this oval dual run capacitor features a dual-rated design to support both the hermetic compressor (50 microfarads) and the condenser fan motor (7.5 microfarads). The 370VAC rating ensures reliable voltage suppression and dielectric strength, providing the necessary phase shift for efficient motor startup and continuous operation. With a physical oval form factor, the MARS 12825 is ideal for tight control boxes where space is at a premium. It utilizes 1/4-inch quick-connect terminals for secure, low-resistance electrical paths. This non-PCB, oil-filled component is built to withstand rigorous cycling, making it a staple for contractors performing maintenance on residential and light commercial condensing units. Accurate capacitance and voltage rating matching are critical for protecting motor windings from overheating and premature failure.

• Dual-Section Versatility: Consolidates compressor and fan motor support into a single 50+7.5 microfarad package to optimize cabinet space.
• Broad Compatibility: Serves as a technical replacement for many 370 VAC oval capacitors used in major brand condensing units.
• Field-Ready Terminals: Standardized 1/4-inch male disconnects allow for rapid integration with existing wiring harnesses.
• Dielectric Reliability: High-grade metallized polypropylene film construction provides stable capacitance tolerance under varying thermal loads.

Can I use a 440V capacitor to replace this 370V model?
Yes, in HVAC applications, you can always go up in voltage rating (e.g., using a 440V capacitor to replace a 370V unit), but you must never go down in voltage. The microfarad (MFD) rating must remain exactly 50/7.5.

What does the 'C', 'H', and 'F' on the terminals stand for?
'C' is the Common terminal, 'H' or 'Herm' connects to the hermetic compressor, and 'F' or 'Fan' connects to the condenser fan motor.

Does the oval shape matter if my old capacitor was round?
The electrical specifications (50/7.5 MFD, 370V) are the priority. If the mounting bracket allows for the change in geometry, an oval capacitor can replace a round one of the same ratings.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.